CN212694265U

CN212694265U - Controller of mowing vehicle based on CAN bus

Info

Publication number: CN212694265U
Application number: CN202021952273.3U
Authority: CN
Inventors: 祁宏
Original assignee: Suzhou Zhiying Electronic Technology Co ltd
Current assignee: Suzhou Zhiying Electronic Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-03-12
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a controller of mowing car based on CAN bus, including the control box, be equipped with the close door on the control box, the side of control box is equipped with line connection end and fault detection port, the inside CAN communication mainboard that is equipped with of control box, CAN communication mainboard passes through the line connection end and is connected with walking motor and the sensor of motor of mowing. The CAN bus has strong expansibility, the modification of the existing functions and the addition of undefined functions CAN be completed by modifying a software protocol, a great number of whole vehicle sensor wire harnesses are not required to be changed, the research and development period of the whole vehicle is greatly shortened, the whole vehicle wire harnesses are simplified through the design of the CAN bus connection mode, the cost is saved, the transmission data volume is large, the expansibility is strong, the communication real-time performance is strong, and the reliability is high.

Description

Controller of mowing vehicle based on CAN bus

Technical Field

The utility model relates to a lawn mower controller technical field specifically is a lawn mower controller based on CAN bus.

Background

The CAN bus is a multi-master bus and the communication medium may be twisted pair, coaxial cable, or fiber optic. The highest communication speed CAN reach 1Mbps, and the CAN bus has the characteristics that: (1) data communication has no master-slave division, any node can initiate data communication to any other node(s), the communication order is determined according to the priority order of the information of each node, and the information of the node with high priority is communicated at 134 mu s; (2) when a plurality of nodes initiate communication simultaneously, the avoidance priority with low priority is high, and the communication line is not congested; (3) the communication distance can reach as far as 10KM (the speed is lower than 5Kbps), the speed can reach 1Mbps (the communication distance is less than 40M); (4) the CAN bus transmission medium CAN be twisted wire pairs and coaxial cables. The CAN bus is suitable for large-data-volume short-distance communication or long-distance small-data-volume communication, has higher real-time requirement, and is used in the field with multiple masters and multiple slaves or equal nodes.

Along with the improvement of living standard, district, company, gardens all need maintain the afforestation, and the market demand of car of mowing gradually increases, and the tradition car of mowing adopts diesel engine drive, and the manpower promotion is gone, and the inefficiency of mowing, environmental pollution are big, and novel car of mowing adopts the group battery power supply, is gone by motor drive, mows efficiently, does not have the emission pollution, in case damage difficult maintenance.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a controller of mowing car based on CAN bus has solved traditional car of mowing, adopts diesel engine drive, and the manpower promotes to go, and the inefficiency of mowing, environmental pollution are big, and novel car of mowing adopts the group battery power supply, goes by motor drive, and it is efficient, no emission pollution to mow, in case damage difficult maintenance.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a controller of mowing car based on CAN bus, includes the control box, be equipped with the close door on the control box, the side of control box is equipped with line connection end and fault detection port, the inside CAN communication mainboard that is equipped with of control box, CAN communication mainboard passes through the sensor connection end and walks the motor and mow the motor and be connected.

Preferably, the CAN communication mainboard is a PCB integrated circuit board, the CAN communication mainboard is provided with a power interface, a line interface, a fault monitoring module, a motor driving module and a CAN communication module, the motor driving module, the CAN communication module and the fault monitoring module are connected with the line interface through data transmission lines, and the line interface is connected with a line connection end and a fault detection port.

Preferably, a sensor of the walking motor is respectively connected with the accelerator lever, the seat switch, the brake switch and the fault monitoring equipment through lines.

Preferably, the sensors of the mowing motor are respectively connected with the PTO switch, the seat switch and the fault monitoring equipment through lines.

Preferably, the fault detection port is connected with a connector of an external detection device.

(III) advantageous effects

The utility model provides a lawn mower controller based on CAN bus. The method has the following beneficial effects:

the CAN bus has strong expansibility, the modification of the existing functions and the addition of undefined functions CAN be completed in a mode of modifying a software protocol, and the change of various whole vehicle sensor wire harnesses is not needed, so that the research and development period of the whole vehicle is greatly shortened. Through the design of the CAN bus connection mode, the whole vehicle wiring harness is simplified, the cost is saved, the transmission data volume is large, the expansibility is strong, the communication real-time performance is strong, and the reliability is high.

Drawings

FIG. 1 is a schematic view of the appearance structure of the control box of the present invention;

FIG. 2 is a schematic view of the internal structure of the control box of the present invention;

fig. 3 is a schematic control flow diagram of the present invention.

In the figure, a control box-1, a closing door-2, a line connection end-3, a fault detection port-4 and a CAN communication mainboard-5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an embodiment of the present invention provides a technical solution: the utility model provides a controller of lawn mower based on CAN bus, includes control box 1, be equipped with closing door 2 on the control box 1, the side of control box 1 is equipped with line connection end 3 and fault detection port 4, the inside CAN communication mainboard 5 that is equipped with of control box 1, CAN communication mainboard 5 passes through line connection end 3 and is connected with walking motor and the sensor of the motor of mowing.

CAN communication mainboard 5 is PCB integrated circuit board, be equipped with power source, line interface, fault monitoring module, motor drive module and CAN communication module on the CAN communication mainboard 5, motor drive module, CAN communication module and fault monitoring module pass through data transmission line and line interface connection, line interface is connected with line connection end 3 and fault detection port 4. The CAN communication mainboard realizes the connection between lines and equipment.

And a sensor of the walking motor is respectively connected with the accelerating rod, the seat switch, the brake switch and the fault monitoring equipment through lines. The acquisition of an accelerator lever neutral position signal, a seat switch signal, a brake switch signal and a driving system fault signal is realized.

And a sensor of the mowing motor is respectively connected with the PTO switch, the seat switch and the fault monitoring equipment through lines. And the acquisition of PTO switch, seat switch signals and controller fault signals is realized.

And the fault detection port 4 is connected with a joint of external detection equipment. The problem can be quickly positioned through the external equipment.

The working principle is as follows: after CAN bus is adopted to transmit data, signals collected by a driving motor sensor are as follows: the neutral position signal of accelerator pedal, seat switch signal, brake switch signal, actuating system fault signal all CAN be through CAN bus transmission, the signal that motor sensor gathered mows: PTO switch, seat switch signal, controller fault signal all CAN be through CAN bus transmission, and the signal will be transmitted to CAN communication mainboard 5 on, when some part of system goes wrong, the controller CAN be with the fault code of predefining, through CAN bus transmission, and diagnostic engineer only needs access fault detection port 4 with diagnostic equipment just CAN fix a position the problem fast.

The control box 1, the closing door 2, the line connection end 3, the fault detection port 4, the CAN communication mainboard 5 of the utility model are all universal standard parts or parts known by the technicians in the field, the structure and the principle of the utility model CAN be known by technical manuals or conventional experimental methods, the utility model solves the problems that the traditional mowing vehicle is driven by a diesel engine and driven by manpower, the mowing efficiency is low, the environmental pollution is great, the novel mowing vehicle is powered by a battery pack and driven by a motor, the mowing efficiency is high, no emission pollution is caused, once the novel mowing vehicle is damaged, the CAN bus has strong expansibility, modification of the existing functions and addition of undefined functions can be completed in a mode of modifying a software protocol, and a great number of finished vehicle sensor wire harnesses do not need to be changed, so that the research and development period of the finished vehicle is greatly shortened. Through the design of the CAN bus connection mode, the whole vehicle wiring harness is simplified, the cost is saved, the transmission data volume is large, the expansibility is strong, the communication real-time performance is strong, and the reliability is high.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a lawn mower controller based on CAN bus which characterized in that: including control box (1), be equipped with on control box (1) closing door (2), the side of control box (1) is equipped with line connection end (3) and fault detection port (4), control box (1) inside is equipped with CAN communication mainboard (5), CAN communication mainboard (5) are connected with the sensor of walking motor and mowing motor through line connection end (3).

2. The CAN-bus based lawn mower controller of claim 1, wherein: CAN communication mainboard (5) is PCB integrated circuit board, be equipped with power source, line interface, fault monitoring module, motor drive module and CAN communication module on CAN communication mainboard (5), motor drive module, CAN communication module and fault monitoring module pass through data transmission line and line interface connection, line interface is connected with line connection end (3) and fault detection port (4).

3. The CAN-bus based lawn mower controller of claim 1, wherein: and a sensor of the walking motor is respectively connected with the accelerating rod, the seat switch, the brake switch and the fault monitoring equipment through lines.

4. The CAN-bus based lawn mower controller of claim 1, wherein: and a sensor of the mowing motor is respectively connected with the PTO switch, the seat switch and the fault monitoring equipment through lines.

5. The CAN-bus based lawn mower controller of claim 1, wherein: and the fault detection port (4) is connected with a joint of external detection equipment.